阅读说明：本技术 一种烟气-燃料双耦合的垃圾气化发电系统 (A kind of refuse gasification electricity generation system of the double couplings of flue gas-fuel ) 是由 杨宏伟 张天琦 李磊 方杨 胡国荣 周民星 于 2019-07-17 设计创作，主要内容包括：本发明提供一种烟气-燃料双耦合的垃圾气化发电系统,包括：垃圾气化系统,所述垃圾气化系统用以对垃圾进行气化生成热解气和热解残余物；第一发电系统,所述第一发电系统包括燃气轮机和第一发电机,所述燃气轮机利用燃烧所述热解气产生的热量做工以带动所述第一发电机发电；垃圾焚烧系统,所述垃圾焚烧系统对所述热解残余物进行燃烧处理,以生成高温烟气；第二发电系统,所述第二发电系统包括余热锅炉、蒸汽轮机以及第二发电机,所述余热锅炉利用所述高温烟气的热量形成过热蒸汽,所述蒸汽轮机利用所述过热蒸汽的热量做工以带动所述第二发电机发电。根据本发明,高效全面利用了垃圾中的热能,提升了垃圾焚烧发电厂发电量,增加了电厂经济效益。(The present invention provides a kind of refuse gasification electricity generation system of double couplings of flue gas-fuel, comprising: refuse gasification system, the refuse gasification system generate pyrolysis gas and pyrolysis residue to carry out gasification to rubbish；First electricity generation system, first electricity generation system include gas turbine and the first generator, and the gas turbine is done manual work using the heat that the pyrolysis gas generates that burns to drive first electrical power generators；Refuse burning system, the refuse burning system carry out burning processing to the pyrolysis residue, to generate high-temperature flue gas；Second electricity generation system, second electricity generation system includes waste heat boiler, steam turbine and the second generator, the waste heat boiler forms superheated steam using the heat of the high-temperature flue gas, and the steam turbine is done manual work using the heat of the superheated steam to drive second electrical power generators.According to the present invention, the thermal energy in rubbish is efficiently utilized comprehensively, improves garbage incinerating power plant generated energy, increases economy of power plant benefit.)

1. a kind of refuse gasification electricity generation system of the double couplings of flue gas-fuel characterized by comprising

Refuse gasification system, the refuse gasification system generate pyrolysis gas and pyrolysis residue to carry out gasification to rubbish；

First electricity generation system, first electricity generation system include gas turbine and the first generator, and the gas turbine utilizes combustion The heat that the pyrolysis gas generates is burnt to do manual work to drive first electrical power generators；

Refuse burning system, the refuse burning system carry out burning processing to the pyrolysis residue, to generate high-temperature flue gas；

Second electricity generation system, second electricity generation system include waste heat boiler, steam turbine and the second generator, the waste heat Boiler forms superheated steam using the heat of the high-temperature flue gas, and the steam turbine is done manual work using the heat of the superheated steam To drive second electrical power generators.

2. refuse gasification electricity generation system as described in claim 1, which is characterized in that the refuse gasification system includes that pyrolysis turns Change furnace.

3. refuse gasification electricity generation system as claimed in claim 2, which is characterized in that the refuse gasification system further includes pyrolysis Air filter, to filter out the particulate matter in the pyrolysis gas.

4. refuse gasification electricity generation system as claimed in claim 3, which is characterized in that the waste heat boiler also with the combustion gas wheel The machine tail gas generated after the pyrolysis gas that burns exchanges heat to generate superheated steam.

5. refuse gasification electricity generation system as described in claim 1, which is characterized in that further include residual neat recovering system, to return Receive the steam exhaust generated after the workmanship of steam turbine described in second electricity generation system.

6. refuse gasification electricity generation system as claimed in claim 5, which is characterized in that the residual neat recovering system includes condensing Device, low-pressure heater, oxygen-eliminating device and feed pump；

The condenser condenses the part steam exhaust to form condensed water；

The low-pressure heater heats the condensed water using the part steam exhaust to form cooling water；

The oxygen-eliminating device is to remove the oxygen in the cooling water；

The cooling water for eliminating oxygen is pumped to the waste heat boiler by the feed pump.

7. refuse gasification electricity generation system as claimed in claim 5, which is characterized in that further include feed drier, in institute State the dry rubbish before refuse gasification system gasifies to rubbish.

Technical field

The present invention relates to field of garbage disposal, generate electricity in particular to a kind of refuse gasification of the double couplings of flue gas-fuel System.

Background technique

China is populous nation, generates a large amount of house refuse every year, currently, waste incineration and generating electricity is disposition house refuse Best mode, to realizing that garbage decrement, innoxious, recycling be of great significance.Increasingly with garbage disposal expense It is low, in the case where identical garbage treatment quantity, bring more economic benefits to will be following mainstream with higher generated energy Trend.

Typical waste incineration and generating electricity technology is using the high-temperature flue gas progress directly burnt away the refuse using generation of burning away the refuse The parameter for burning power plant is promoted to medium temperature sub-high pressure to promote generating efficiency and has made dust stratification and etching problem by power generation It is further serious, it burns power plant and has to the shutdown maintenance of progress in 3 months, and power plant is promoted by way of improving steam parameter Economy will make power plant face great security risk.Therefore, it is necessary to it is a kind of completely new, power generation effect is promoted on the basis of safety Rate improves the electricity generation system of garbage burning factory economic benefit.

For this purpose, the present invention proposes a kind of refuse gasification electricity generation system of double couplings of new flue gas-fuel, it is existing to solve The problems in technology.

Summary of the invention

A series of concept of reduced forms is introduced in Summary, this will in the detailed description section into One step is described in detail.Summary of the invention is not meant to attempt to limit technical solution claimed Key feature and essential features do not mean that the protection scope for attempting to determine technical solution claimed more.

The present invention provides a kind of refuse gasification electricity generation systems, comprising:

Refuse gasification system, to carry out to rubbish, gasification generates pyrolysis gas to the refuse gasification system and pyrolysis is remaining Object；

First electricity generation system, first electricity generation system include gas turbine and the first generator, the gas turbine benefit With burning, the heat that the pyrolysis gas generates is done manual work to drive first electrical power generators；

Refuse burning system, the refuse burning system carry out burning processing to the pyrolysis residue, to generate high temperature Flue gas；

Second electricity generation system, second electricity generation system include waste heat boiler, steam turbine and the second generator, described Waste heat boiler forms superheated steam using the heat of the high-temperature flue gas, and the steam turbine utilizes the heat of the superheated steam Workmanship is to drive second electrical power generators.

Illustratively, the refuse gasification system includes pyrolysis conversion furnace.

Illustratively, the refuse gasification system further includes pyrolysis air filter, to filter out in the pyrolysis gas Particulate matter.

Illustratively, the waste heat boiler is also changed with the tail gas generated after pyrolysis gas described in the gas turbine combustion Heat is to generate superheated steam.

Illustratively, further include residual neat recovering system, done to recycle steam turbine described in second electricity generation system The steam exhaust generated after work.

Illustratively, the residual neat recovering system includes condenser, low-pressure heater, oxygen-eliminating device and feed pump；

The condenser condenses the part steam exhaust to form condensed water；

The low-pressure heater heats the condensed water using the part steam exhaust to form cooling water；

The oxygen-eliminating device is to remove the oxygen in the cooling water；

The cooling water for eliminating oxygen is pumped to the waste heat boiler by the feed pump.

It illustratively, further include feed drier, to be done before the refuse gasification system gasifies to rubbish The dry rubbish.

The refuse gasification electricity generation system of the double couplings of flue gas-fuel according to the present invention, utilizes the generation after refuse pyrolysis Pyrolysis gas carries out power generation and is aided with the heat that steam turbine generates high-temperature flue gas using the pyrolysis residue generated after burning pyrolysis It generates electricity, the thermal energy being efficiently utilized comprehensively in rubbish is greatly improved rubbish in the case where not changing steam parameter Power generation by waste combustion factory generated energy avoids hidden safely by changing steam parameter raising generated energy bring in steam turbine power generation Suffer from, while increasing economy of power plant benefit.

Detailed description of the invention

Following drawings of the invention is incorporated herein as part of the present invention for the purpose of understanding the present invention.Shown in the drawings of this hair Bright embodiment and its description, principle used to explain the present invention.

In attached drawing:

Fig. 1 is the structure according to the refuse gasification electricity generation system of the double couplings of flue gas-fuel of one embodiment of the present of invention Schematic diagram.

Specific embodiment

In the following description, a large amount of concrete details are given so as to provide a more thorough understanding of the present invention.So And it is obvious to the skilled person that the present invention may not need one or more of these details and be able to Implement.In other examples, in order to avoid confusion with the present invention, for some technical characteristics well known in the art not into Row description.

In order to thoroughly understand the present invention, detailed description will be proposed in following description, to illustrate rubbish gas of the present invention Elelctrochemical power generation system.Obviously, execution of the invention is not limited to the specific details that the technical staff of field of garbage disposal is familiar with.This The preferred embodiment of invention is described in detail as follows, however other than these detailed descriptions, the present invention can also have other implementations Mode.

It should give it is noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root According to exemplary embodiment of the present invention.As used herein, unless the context clearly indicates otherwise, otherwise singular It is intended to include plural form.Additionally, it should be understood that when using term "comprising" and/or " comprising " in the present specification When, indicate that there are the feature, entirety, step, operation, element and/or component, but do not preclude the presence or addition of one or more Other a features, entirety, step, operation, element, component and/or their combination.

Since villages and small towns area suffers from the factors such as the level of economic development, conditions of transportation and Basic Government environmental protection concept Limitation, cause residents in rural community to receive the missing of fortune and processing system, rubbish arbitrarily abandons, simple stacking or even outdoor burns It burns, environmental pollution is serious, seriously threatens the ecological environment security in rural area.

A kind of high-temperature flue gas that typical waste incineration and generating electricity technology use is directly burnt away the refuse using generation of burning away the refuse It generates electricity, in order to promote generating efficiency, the parameter for burning power plant is promoted to medium temperature sub-high pressure and has made dust stratification and corrosion Problem is further serious, burns power plant and has to the shutdown maintenance of progress in 3 months, and is promoted by way of improving steam parameter Economy of power plant will make power plant face great security risk.

For example, existing garbage incinerating power plant generally use be medium temperature and medium pressure (4Mpa, 400 DEG C) main vapour parameter, The whole audience thermal efficiency is 21% or so, and in this case, the efficiency for handling rubbish is lower, higher cost, leads to the rubbish under the parameter Rubbish burns the economic benefit of power plant also worse and worse.Therefore select higher main vapour parameter at a kind of selection (medium temperature sub-high pressure 6.4MPa, 450 DEG C), but after the raising of main vapour parameter, relevant pressure-bearing heating surface ring as locating for the equipment such as superheater, reheater The temperature in border is also promoted accordingly, easily causes pipe explosion accident, causes irremediable damage to business property and personnel safety It loses.Even if the equipment using certain material improves safety problem, for example, by using the main heating surface of special alloy steel built-up welding, But resurfacing welding material still remains problem thinned year by year, and built-up welding price is extremely expensive, such as a 500t/d incinerator The built-up welding price of system tens million of members easily.Therefore, under the conditions of existing, power plant's warp is promoted by way of improving steam parameter Ji property will make power plant face great security risk, therefore the electrification technique for finding a kind of new promotion burning power generating capacity is The developing direction of the following power generation by waste combustion factory.

In order to solve the problems in the prior art, the present invention provides a kind of refuse gasification electricity generation systems, comprising:

Refuse gasification system, to carry out to rubbish, gasification generates pyrolysis gas to the refuse gasification system and pyrolysis is remaining Object；

First electricity generation system, first electricity generation system include gas turbine and the first generator, the gas turbine benefit With burning, the heat that the pyrolysis gas generates is done manual work to drive first electrical power generators；

Refuse burning system, the refuse burning system carry out burning processing to the pyrolysis residue, to generate high temperature Flue gas；

Second electricity generation system, second electricity generation system include waste heat boiler, steam turbine and the second generator, described Waste heat boiler forms superheated steam using the heat of the high-temperature flue gas, and the steam turbine utilizes the heat of the superheated steam Workmanship is to drive second electrical power generators.

Refuse gasification electricity generation system of the invention is schematically illustrated below with reference to Fig. 1, wherein Fig. 1 is according to this hair The structural schematic diagram of the refuse gasification electricity generation system of bright one embodiment, wherein arrow shows the flowing of resource in system Direction.

Referring initially to Fig. 1, refuse gasification electricity generation system includes refuse gasification system.Illustratively, refuse gasification system packet Include pyrolysis conversion furnace 1.Through collecting into after garbage burning factory, input pyrolysis conversion furnace 1 is pyrolyzed house refuse, exemplary , feed drier 2 is first passed through before input pyrolysis conversion furnace 1 is pyrolyzed and is dried, so that pyrolysis conversion furnace Rubbish is sufficiently pyrolyzed.As shown by the arrows in Figure 1, rubbish first enters into input pyrolysis conversion after the material drying of drier 2 Furnace 1 is pyrolyzed.

Rubbish is by refuse gasification system generation pyrolysis gas and including pyrolysis residues such as solid slag, tar.Wherein pyrolysis gas The first electricity generation system is inputted to generate electricity.

As shown in Figure 1, the first electricity generation system includes gas turbine 3 and generator 4, the gas turbine 3 utilizes burning institute The heat workmanship of pyrolysis gas generation is stated to drive the generator 4 to generate electricity.It generates electricity after rubbish is pyrolyzed, heat therein It vents one's spleen and inputs gas turbine and generate electricity, the part energy in rubbish is made to utilize and generate electricity by way of burning, compared to The steam after high-temperature flue gas heat exchange will be used to carry out steam turbine power generation after waste incineration, on the one hand pyrolysis keeps garbage decomposition completeer Entirely, energy conversion is more abundant, and on the other hand, the energy in pyrolysis gas is used to gas turbine power generation, avoids completely using vapor wheel The problem of bring steam turbine low efficiency when machine generates electricity, steam parameter is not suitable for adjustment.

Since gas turbine is easy in use in plenum chamber accumulated impurities or even etched the matrix metal, this is existing Service life as will affect gas turbine.In order to avoid the influence of impurity, illustratively, as shown in Figure 1, the refuse gasification System further includes the pyrolysis air filter 5 being arranged in after the pyrolysis conversion furnace 1, is discharged to filter out pyrolysis conversion furnace 1 Pyrolysis gas in the particulate matter carried secretly, so that the particulate matter for avoiding pyrolysis gas from carrying secretly influences the service life of gas turbine.

As shown by the arrows in Figure 1, input pyrolysis conversion furnace 1 is pyrolyzed after rubbish first enters into the material drying of drier 2, The gas input pyrolysis air filter 5 of pyrolysis is filtered, by filtered pyrolysis gas input gas turbine 3 and generator into Row power generation.

Rubbish generates pyrolysis gas by the post-processing of refuse gasification system pyrolytic gasification, and the also pyrolysis such as generation solid slag, kerosene is residual Excess.The refuse gasification electricity generation system of the double couplings of flue gas-fuel according to the present invention is also carried out using the heat of pyrolysis residue Power generation.

Specifically, the refuse gasification electricity generation system of the double couplings of flue gas-fuel according to the present invention further includes waste incineration system System, the refuse burning system carries out burning processing to the pyrolysis residue, to generate high-temperature flue gas.As shown in Figure 1, rubbish Incineration system includes incinerator 6, and the pyrolysis residue generated after the pyrolysis conversion pyrolysis rubbish of furnace 1 is delivered to incinerator 6 and is burnt It burns, generates high-temperature flue gas.Second electricity generation system is generated electricity using the heat of high-temperature flue gas.

As shown by the arrows in Figure 1, input pyrolysis conversion furnace 1 is pyrolyzed after rubbish first enters into the material drying of drier 2, The pyrolysis residue input incinerator 6 generated after pyrolysis is burned, to generate high-temperature flue gas.

Illustratively, as shown in Figure 1, the second electricity generation system includes waste heat boiler 7, steam turbine 8 and generator 9, institute It states waste heat boiler 7 and forms superheated steam using the heat of the high-temperature flue gas, the steam turbine 8 utilizes the superheated steam Heat workmanship is to drive the generator 9 to generate electricity.

With continued reference to direction shown in Fig. 1 arrow, incinerator 6 burns the high-temperature flue gas generated in setting at 6 end of incinerator Heat exchange generates superheated steam in the waste heat boiler 7 at end, and superheated steam inputs steam turbine 8 and generator 9 generates electricity.

Illustratively, the incinerator can be waste incinerator, and the present invention can be set to burn in conventional garbage and set Standby middle increase refuse gasification gasification system, to reach technical effect of the invention.Wherein, the high-temperature flue gas is incinerator burning High-temperature flue gas is generated after rubbish, the high-temperature flue gas that waste incinerator generates after burning away the refuse is up to 800 DEG C, wherein include HCl, SO₂Equal sour gas need to carry out it to be passed through atmosphere after processing forms the flue gas that can be discharged.

Illustratively, refuse burning system further includes smoke processing system (not shown in figure 1), and smoke processing system includes Deacidifying device, bag-type dust collector etc. do not limit herein to carry out purified treatment to flue gas.

According to one embodiment of present invention, the first electricity generation system is generated electricity using gas turbine combustion pyrolysis gas, The tail gas generated after burning also has certain heat.Illustratively, second electricity generation system also utilizes the heat of the tail gas Amount generates electricity.

As shown in Figure 1,3 combustion heat of gas turbine is vented one's spleen, the tail gas generated after being generated electricity is input to the flue of incinerator 6, It is delivered to waste heat boiler 7 together with the high-temperature flue gas that incinerator 6 exports, the superheated steam generated after heat exchange is input to steam It generates electricity in turbine 8.

With continued reference to direction shown in Fig. 1 arrow, pyrolysis conversion furnace 1 is pyrolyzed the gas input pyrolysis gas mistake generated after rubbish Filter 5 is filtered, and inputs gas turbine 3 by filtered pyrolysis gas and generator generates electricity, the tail generated after power generation Gas is input to flue heat exchange generation overheat steaming in the waste heat boiler together with the high-temperature flue gas generated by incinerator 6 of incinerator 6 Vapour, superheated steam inputs steam turbine 8 and generator 9 generates electricity.

Illustratively, the refuse gasification electricity generation systems that flue gas-fuel according to an embodiment of the invention pair couples are also Including residual neat recovering system, to recycle the steam exhaust generated after the workmanship of steam turbine described in second electricity generation system.Such as Fig. 1 Shown, residual neat recovering system includes condenser 10, low-pressure heater 11, oxygen-eliminating device 12 and feed pump 13.The condenser 10 To condense the part steam exhaust to form condensed water.The low-pressure heater 11 is to using described in the steam exhaust heating of part Condensed water is to form cooling water.The oxygen-eliminating device 12 is to remove the oxygen in the cooling water.In one example, oxygen-eliminating device 12 using the heat cooling water of part steam exhaust to remove oxygen.The feed pump 13 will be will eliminate the described cold of oxygen But water is pumped to the waste heat boiler 7.Waste heat boiler 7 exchanges heat to form overheat using the cooling water and high-temperature flue gas for eliminating oxygen Steam, superheated steam are input to the second electricity generation system and generate electricity.In this way, forming superheated steam, steam exhaust, condensed water and cooling water Resources circulation, further make full use of resource, avoid the wasting of resources.

With continued reference to direction shown in Fig. 1 arrow, generated after superheated steam input steam turbine 8 and the power generation of generator 9 Steam exhaust pass sequentially through condenser 10, low-pressure heater 11, oxygen-eliminating device 12 and feed pump 13 are recovered to waste heat boiler, are provided The recycling in source.

In conclusion the refuse gasification electricity generation system of the double couplings of flue gas-fuel according to the present invention, after refuse pyrolysis The pyrolysis gas of generation carry out power generation and be aided with steam turbine generating high temperature cigarette using the pyrolysis residue that generates after pyrolysis is burned The heat of gas generates electricity, and the thermal energy being efficiently utilized comprehensively in rubbish is greatly mentioned in the case where not changing steam parameter Garbage incinerating power plant generated energy has been risen, has avoided in steam turbine power generation and improves generated energy bring by changing steam parameter Security risk, while increasing economy of power plant benefit.

The present invention has been explained by the above embodiments, but it is to be understood that, above-described embodiment is only intended to The purpose of citing and explanation, is not intended to limit the invention to the scope of the described embodiments.Furthermore those skilled in the art It is understood that the present invention is not limited to the above embodiments, introduction according to the present invention can also be made more kinds of member Variants and modifications, all fall within the scope of the claimed invention for these variants and modifications.Protection scope of the present invention by The appended claims and its equivalent scope are defined.